diff --git a/core/api_server.py b/core/api_server.py
index e7c5928..6a547ab 100644
--- a/core/api_server.py
+++ b/core/api_server.py
@@ -6,7 +6,7 @@ from fastapi.responses import PlainTextResponse
 
 from core.certificate_manager import CertificateManager
 from core.trace_id_handler import TraceIdHandler
-from core.api_models import (
+from shared.api_models import (
     CertificateDTO,
     CertificateGenerateRequest,
     CertificateGenerateResult,
diff --git a/core/api_models.py b/shared/api_models.py
similarity index 100%
rename from core/api_models.py
rename to shared/api_models.py